#main .container{
    height:800px;
    margin-top: 100px;
    display: flex;  /*弹性布局*/
    justify-content: center; /*居中*/
    /*justify-content: space-between; !*两端对齐*!*/
    /*justify-content: space-around; !*两侧间隔相等*!*/
}
#main .layui-upload-drag .layui-icon{
    color:#1e9fff;
}
#main .layui-btn{
    background-color: #1e9fff;
}